Toray Industries, Inc.

Miyu Shiraishi

Takayuki Uto

Yuji Matsuo

Shohei Yoshida

Shin Hirose

A head-up display (HUD) system is described that makes it less possible that coloring is visually recognized on a windshield even with sunglasses worn, wherein the head-up display system includes an image projector configured to project an image; and a resin film configured such that the image from the image projector is projected on the resin film, wherein the resin film is a reflective plane, and is disposed in such a manner that the incidence plane where the maximum of the absolute value of a* and the maximum of the absolute value of b* satisfy the following formulae (1) and (2) is at 90±10° to a horizontal plane.Maximum of absolute value of*≤30  (1)Maximum of absolute value of*≤30  (2)

Head-up display system

Embodiments disclose an optical material having a visual confirmation effect due to higher directivity of light reflection than a conventional optical material. Embodiments can include a laminate having a multilayer laminated film in which 11 or more layers of different thermoplastic resins are alternately laminated. With respect to light in a wavelength range of 400 to 700 nm and that is perpendicularly incident on an outer surface of the multilayer laminated film, the laminate has an average transmittance in the above wavelength range of 50% or more. When average reflectances in a wavelength range of 400 to 700 nm with respect to S-wave light in the wavelength range, incident at angles of 20° and 70° with respect to the normal line of the outer surface of the film at azimuths ϕn (n: 1 to 5), are given as Rs20(ϕn) and Rs70(ϕn), respectively, the laminate satisfies, at least one azimuth ϕn:Rs70(ϕn)−Rs20(ϕn)≥50(%).

Laminated body and manufacturing method thereof, light guide plate unit, light source unit, display device, projection image display member, projection image display device, and display screen filter

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Otsu, Japan

Miyu Shiraishi